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Which biome is characterized by little rainfall, no trees, permafrost, and reindeer?


A) grasslands
B) temperate deciduous forest
C) desert
D) taiga
E) tundra

F) A) and B)
G) A) and E)

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The part of a lake where light does not penetrate is the


A) littoral zone.
B) benthic zone.
C) pelagic zone.
D) profundal zone.
E) limnetic zone.

F) A) and D)
G) A) and C)

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Compare the mean annual temperature and precipitation ranges required for the following biomes: temperate deciduous forest, tropical rainforest, and tundra.

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The temperate deciduous forest has a mea...

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Which of the following is the correct sequence of the different zones in the open ocean (top to bottom) ?


A) abyssal, bathypelagic, mesopelagic, epipelagic
B) abyssal, mesopelagic, bathypelagic, epipelagic
C) epipelagic, bathypelagic, mesopelagic, abyssal
D) epipelagic, abyssal, bathypelagic, mesopelagic
E) epipelagic, mesopelagic, bathypelagic, abyssal

F) C) and E)
G) A) and B)

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How does temperature change in relation to the latitude?


A) Moving away from the equator toward the North Pole, the temperature increases. Moving away from the equator toward the South Pole, the temperature decreases.
B) Moving away from the equator toward either the North Pole or the South Pole, the temperature decreases.
C) Moving away from the equator toward either the North Pole or the South Pole, the temperature increases.
D) Moving away from the equator toward either the North Pole or the South Pole, the temperature increases until 60° and then it decreases.
E) There is no relationship between temperature and latitude.

F) B) and C)
G) A) and E)

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The open sunlit layer within a lake is the


A) littoral zone.
B) limnetic zone.
C) profundal zone.
D) benthic zone.
E) abyssal zone.

F) A) and C)
G) B) and D)

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Which of the following is an area where fresh and salt water meet and mix?


A) lake
B) river
C) estuary
D) stream
E) pond

F) A) and B)
G) None of the above

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Which would be characterized by rainfall under 25 cm/year, hot days, cold nights, and spiny-leafed plants?


A) grasslands
B) temperate deciduous forest
C) desert
D) taiga
E) tundra

F) A) and E)
G) C) and E)

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When an ocean current brings cold, nutrient-rich water to the surface, it is called a(n)


A) tide.
B) lake effect.
C) upwelling.
D) monsoon.
E) overturn.

F) B) and C)
G) C) and E)

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The bottom of a lake or stream that harbors worms, clams, and other organisms in the


A) littoral zone.
B) limnetic zone.
C) profundal zone.
D) benthic zone.
E) abyssal zone.

F) C) and D)
G) A) and D)

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The ocean


A) lacks life below the first several hundred feet.
B) has zooplankton but not phytoplankton.
C) covers little of the Earth's surface.
D) is not affected by freshwater pollution.
E) covers three-fourths of the planet.

F) B) and D)
G) A) and B)

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Which of the following biomes has the overall harshest conditions for organism survival?


A) tropical rain forest
B) eastern deciduous forest
C) arctic tundra
D) grasslands
E) savanna

F) A) and E)
G) B) and C)

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What environmental factor makes it very difficult for organisms that live in estuaries?


A) the movement of water as the river flows into the ocean
B) the constant fluctuation in the salinity of the water as the salt water and fresh water mix
C) the fluctuating nutrient levels as the river brings different levels of nutrients to the estuary
D) the change in water levels as the tide ebbs and flows
E) the change in the temperature of the water since the river water is colder than the ocean

F) A) and C)
G) A) and D)

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Alpine tundra is found on the top of mountains while arctic tundra is found close to the North Pole. These two biomes have similar plants and animals even though they can be located in very different regions of the world. Why are these two biomes so similar?


A) Both alpine tundra and arctic tundra are found close to coniferous forests.
B) Alpine tundra is cold and dry because it is at a high latitude and arctic tundra is cold and dry because it is at a high altitude.
C) Both types of tundra are located in areas of intense sunshine.
D) Alpine tundra grows mostly grasses because the soil is poor and arctic tundra grows mostly grasses because the soil is frozen.
E) Both types of tundra support large grazing herds that keep the grasses clipped short.

F) A) and D)
G) B) and C)

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